Small tools for problems
I actually have.

DOLPARO is one person. I notice something that keeps annoying me, look for the shortest way to fix it, and build that. Nothing I make has a server.

Nothing here has a server

That is not a marketing line. It is the architecture, and it decides what these tools can and cannot do.

There are no accounts to create. Nothing you write is sent anywhere I can read. When a product says it does not collect your data, you usually have to take that on faith — here you can check it, because there is no endpoint to send anything to.

The cost is real too: no cloud sync, no cross-device history, no analytics telling me which features you use. I decided that trade was worth it.

Two products · one in review

What I've built

The annoyance

The sentence that mattered while reading is gone once you close the tab.

Highlighter

A Chrome extension that highlights sentences in place and lets you attach a note right there. Come back later and everything is restored where you left it. Stored on your device by default; sync is off until you turn it on.

The annoyance

On a busy day you can go from morning to night without smiling once.

SmileDay

An iPhone app that reminds you a few times a day, gives you five seconds, and records only how many times you did it. No photos, no scoring, no streaks.

Korean interface only for now. It is on the App Store worldwide, but everything inside is in Korean. An English version is not ready, so I'd rather you knew before installing.

Next one

In progress

How I build

  1. 01

    Start from a problem I have

    Not an imagined market. Something that has annoyed me repeatedly enough that I noticed the pattern.

  2. 02

    Find the shortest path

    Fewer steps beats more features. If it takes three actions instead of one, the tool will not get used.

  3. 03

    Build small, then live with it

    A working version I use daily teaches me more than a perfect plan.

  4. 04

    Improve only as far as needed

    Some things are finished. Adding to them makes them worse.

Say hello

Questions, bug reports, or a small problem you keep running into — I read everything and reply myself.

I can't promise to build what you suggest. I can promise to read it.